• 设为首页
  • 点击收藏
  • 手机版
    手机扫一扫访问
    迪恩网络手机版
  • 关注官方公众号
    微信扫一扫关注
    公众号
登陆 注册

C++ brw_MUL函数代码示例

原作者: [db:作者] 来自: [db:来源] 收藏 邀请

本文整理汇总了C++中brw_MUL函数的典型用法代码示例。如果您正苦于以下问题：C++ brw_MUL函数的具体用法？C++ brw_MUL怎么用？C++ brw_MUL使用的例子？那么恭喜您, 这里精选的函数代码示例或许可以为您提供帮助。



在下文中一共展示了brw_MUL函数的20个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于我们的系统推荐出更棒的C++代码示例。

示例1: brw_push_insn_state

void
vec4_generator::generate_gs_set_write_offset(struct brw_reg dst,
        struct brw_reg src0,
        struct brw_reg src1)
{
    /* From p22 of volume 4 part 2 of the Ivy Bridge PRM (2.4.3.1 Message
     * Header: M0.3):
     *
     *     Slot 0 Offset. This field, after adding to the Global Offset field
     *     in the message descriptor, specifies the offset (in 256-bit units)
     *     from the start of the URB entry, as referenced by URB Handle 0, at
     *     which the data will be accessed.
     *
     * Similar text describes DWORD M0.4, which is slot 1 offset.
     *
     * Therefore, we want to multiply DWORDs 0 and 4 of src0 (the x components
     * of the register for geometry shader invocations 0 and 1) by the
     * immediate value in src1, and store the result in DWORDs 3 and 4 of dst.
     *
     * We can do this with the following EU instruction:
     *
     *     mul(2) dst.3<1>UD src0<8;2,4>UD src1   { Align1 WE_all }
     */
    brw_push_insn_state(p);
    brw_set_access_mode(p, BRW_ALIGN_1);
    brw_set_mask_control(p, BRW_MASK_DISABLE);
    brw_MUL(p, suboffset(stride(dst, 2, 2, 1), 3), stride(src0, 8, 2, 4),
            src1);
    brw_set_access_mode(p, BRW_ALIGN_16);
    brw_pop_insn_state(p);
}
开发者ID:anderco，项目名称:mesa，代码行数:31，代码来源:brw_vec4_generator.cpp


示例2: emit_pinterp

static void emit_pinterp(struct brw_wm_compile *c,
		struct prog_instruction *inst)
{
    struct brw_compile *p = &c->func;
    GLuint mask = inst->DstReg.WriteMask;

    struct brw_reg interp[4];
    struct brw_reg dst, delta0, delta1;
    struct brw_reg src0, w;

    src0 = get_src_reg(c, &inst->SrcReg[0], 0, 1);
    delta0 = get_src_reg(c, &inst->SrcReg[1], 0, 1);
    delta1 = get_src_reg(c, &inst->SrcReg[1], 1, 1);
    w = get_src_reg(c, &inst->SrcReg[2], 3, 1);
    GLuint nr = src0.nr;
    int i;

    interp[0] = brw_vec1_grf(nr, 0);
    interp[1] = brw_vec1_grf(nr, 4);
    interp[2] = brw_vec1_grf(nr+1, 0);
    interp[3] = brw_vec1_grf(nr+1, 4);

    for(i = 0; i < 4; i++ ) {
	if (mask & (1<<i)) {
	    dst = get_dst_reg(c, inst, i, 1);
	    brw_LINE(p, brw_null_reg(), interp[i], delta0);
	    brw_MAC(p, dst, suboffset(interp[i],1), 
		    delta1);
	    brw_MUL(p, dst, dst, w);
	}
    }
}
开发者ID:Multi2Sim，项目名称:m2s-bench-parsec-3.0-src，代码行数:32，代码来源:brw_wm_glsl.c


示例3: brw_clip_interp_vertex

/* Interpolate between two vertices and put the result into a0.0.  
 * Increment a0.0 accordingly.
 */
void brw_clip_interp_vertex( struct brw_clip_compile *c,
			     struct brw_indirect dest_ptr,
			     struct brw_indirect v0_ptr, /* from */
			     struct brw_indirect v1_ptr, /* to */
			     struct brw_reg t0,
			     GLboolean force_edgeflag)
{
   struct brw_compile *p = &c->func;
   struct brw_reg tmp = get_tmp(c);
   GLuint i;

   /* Just copy the vertex header:
    */
   brw_copy_indirect_to_indirect(p, dest_ptr, v0_ptr, 1);
      
   /* Iterate over each attribute (could be done in pairs?)
    */
   for (i = 0; i < c->nr_attrs; i++) {
      GLuint delta = i*16 + 32;

      if (delta == c->offset[VERT_RESULT_EDGE]) {
	 if (force_edgeflag) 
	    brw_MOV(p, deref_4f(dest_ptr, delta), brw_imm_f(1));
	 else
	    brw_MOV(p, deref_4f(dest_ptr, delta), deref_4f(v0_ptr, delta));
      }
      else {
	 /* Interpolate: 
	  *
	  *        New = attr0 + t*attr1 - t*attr0
	  */
	 brw_MUL(p, 
		 vec4(brw_null_reg()),
		 deref_4f(v1_ptr, delta),
		 t0);

	 brw_MAC(p, 
		 tmp,	      
		 negate(deref_4f(v0_ptr, delta)),
		 t0); 
	      
	 brw_ADD(p,
		 deref_4f(dest_ptr, delta), 
		 deref_4f(v0_ptr, delta),
		 tmp);
      }
   }

   if (i & 1) {
      GLuint delta = i*16 + 32;
      brw_MOV(p, deref_4f(dest_ptr, delta), brw_imm_f(0));
   }

   release_tmp(c, tmp);

   /* Recreate the projected (NDC) coordinate in the new vertex
    * header:
    */
   brw_clip_project_vertex(c, dest_ptr );
}
开发者ID:Starlink，项目名称:mesa，代码行数:63，代码来源:brw_clip_util.c


示例4: do_flatshade_line

static void do_flatshade_line( struct brw_sf_compile *c )
{
   struct brw_compile *p = &c->func;
   struct brw_context *brw = p->brw;
   struct brw_reg ip = brw_ip_reg();
   GLuint nr;
   GLuint jmpi = 1;

   /* Already done in clip program:
    */
   if (c->key.primitive == SF_UNFILLED_TRIS)
      return;

   if (brw->gen == 5)
       jmpi = 2;

   nr = count_flatshaded_attributes(c);

   brw_MUL(p, c->pv, c->pv, brw_imm_d(jmpi*(nr+1)));
   brw_JMPI(p, ip, ip, c->pv);
   copy_flatshaded_attributes(c, c->vert[1], c->vert[0]);

   brw_JMPI(p, ip, ip, brw_imm_ud(jmpi*nr));
   copy_flatshaded_attributes(c, c->vert[0], c->vert[1]);
}
开发者ID:ignatenkobrain，项目名称:mesa，代码行数:25，代码来源:brw_sf_emit.c


示例5: do_flatshade_line

static void do_flatshade_line( struct brw_sf_compile *c )
{
    struct brw_compile *p = &c->func;
    struct intel_context *intel = &p->brw->intel;
    struct brw_reg ip = brw_ip_reg();
    GLuint nr = brw_count_bits(c->key.attrs & VERT_RESULT_COLOR_BITS);
    GLuint jmpi = 1;

    if (!nr)
        return;

    /* Already done in clip program:
     */
    if (c->key.primitive == SF_UNFILLED_TRIS)
        return;

    if (intel->gen == 5)
        jmpi = 2;

    brw_push_insn_state(p);

    brw_MUL(p, c->pv, c->pv, brw_imm_d(jmpi*(nr+1)));
    brw_JMPI(p, ip, ip, c->pv);
    copy_colors(c, c->vert[1], c->vert[0]);

    brw_JMPI(p, ip, ip, brw_imm_ud(jmpi*nr));
    copy_colors(c, c->vert[0], c->vert[1]);

    brw_pop_insn_state(p);
}
开发者ID:nikai3d，项目名称:mesa，代码行数:30，代码来源:brw_sf_emit.c


示例6: do_flatshade_triangle

/* Need to use a computed jump to copy flatshaded attributes as the
 * vertices are ordered according to y-coordinate before reaching this
 * point, so the PV could be anywhere.
 */
static void do_flatshade_triangle( struct brw_sf_compile *c )
{
   struct brw_compile *p = &c->func;
   struct brw_reg ip = brw_ip_reg();
   GLuint nr = brw_count_bits(c->key.attrs & VERT_RESULT_COLOR_BITS);
   if (!nr)
      return;

   /* Already done in clip program:
    */
   if (c->key.primitive == SF_UNFILLED_TRIS)
      return;

   brw_push_insn_state(p);
   
   brw_MUL(p, c->pv, c->pv, brw_imm_ud(nr*2+1));
   brw_JMPI(p, ip, ip, c->pv);

   copy_colors(c, c->vert[1], c->vert[0]);
   copy_colors(c, c->vert[2], c->vert[0]);
   brw_JMPI(p, ip, ip, brw_imm_ud(nr*4+1));

   copy_colors(c, c->vert[0], c->vert[1]);
   copy_colors(c, c->vert[2], c->vert[1]);
   brw_JMPI(p, ip, ip, brw_imm_ud(nr*2));

   copy_colors(c, c->vert[0], c->vert[2]);
   copy_colors(c, c->vert[1], c->vert[2]);

   brw_pop_insn_state(p);
}
开发者ID:Multi2Sim，项目名称:m2s-bench-parsec-3.0-src，代码行数:35，代码来源:brw_sf_emit.c


示例7: emit_pinterp

static void emit_pinterp( struct brw_compile *p, 
			  const struct brw_reg *dst,
			  GLuint mask,
			  const struct brw_reg *arg0,
			  const struct brw_reg *deltas,
			  const struct brw_reg *w)
{
   struct brw_reg interp[4];
   GLuint nr = arg0[0].nr;
   GLuint i;

   interp[0] = brw_vec1_grf(nr, 0);
   interp[1] = brw_vec1_grf(nr, 4);
   interp[2] = brw_vec1_grf(nr+1, 0);
   interp[3] = brw_vec1_grf(nr+1, 4);

   for(i = 0; i < 4; i++ ) {
      if (mask & (1<<i)) {
	 brw_LINE(p, brw_null_reg(), interp[i], deltas[0]);
	 brw_MAC(p, dst[i], suboffset(interp[i],1), deltas[1]);
      }
   }
   for(i = 0; i < 4; i++ ) {
      if (mask & (1<<i)) {
	 brw_MUL(p, dst[i], dst[i], w[3]);
      }
   }
}
开发者ID:Multi2Sim，项目名称:m2s-bench-parsec-3.0-src，代码行数:28，代码来源:brw_wm_emit.c


示例8: emit_ddy

static void emit_ddy(struct brw_wm_compile *c,
                struct prog_instruction *inst)
{
    struct brw_compile *p = &c->func;
    GLuint mask = inst->DstReg.WriteMask;
    struct brw_reg interp[4];
    struct brw_reg dst;
    struct brw_reg src0, w;
    GLuint nr, i;

    src0 = get_src_reg(c, &inst->SrcReg[0], 0, 1);
    nr = src0.nr;
    w = get_src_reg(c, &inst->SrcReg[1], 3, 1);
    interp[0] = brw_vec1_grf(nr, 0);
    interp[1] = brw_vec1_grf(nr, 4);
    interp[2] = brw_vec1_grf(nr+1, 0);
    interp[3] = brw_vec1_grf(nr+1, 4);
    brw_set_saturate(p, inst->SaturateMode != SATURATE_OFF);
    for(i = 0; i < 4; i++ ) {
        if (mask & (1<<i)) {
            dst = get_dst_reg(c, inst, i, 1);
            brw_MOV(p, dst, suboffset(interp[i], 1));
            brw_MUL(p, dst, dst, w);
        }
    }
    brw_set_saturate(p, 0);
}
开发者ID:Multi2Sim，项目名称:m2s-bench-parsec-3.0-src，代码行数:27，代码来源:brw_wm_glsl.c


示例9: do_flatshade_triangle

/* Need to use a computed jump to copy flatshaded attributes as the
 * vertices are ordered according to y-coordinate before reaching this
 * point, so the PV could be anywhere.
 */
static void do_flatshade_triangle( struct brw_sf_compile *c )
{
   struct brw_compile *p = &c->func;
   struct brw_context *brw = p->brw;
   GLuint nr;
   GLuint jmpi = 1;

   /* Already done in clip program:
    */
   if (c->key.primitive == SF_UNFILLED_TRIS)
      return;

   if (brw->gen == 5)
       jmpi = 2;

   nr = count_flatshaded_attributes(c);

   brw_MUL(p, c->pv, c->pv, brw_imm_d(jmpi*(nr*2+1)));
   brw_JMPI(p, c->pv, BRW_PREDICATE_NONE);

   copy_flatshaded_attributes(c, c->vert[1], c->vert[0]);
   copy_flatshaded_attributes(c, c->vert[2], c->vert[0]);
   brw_JMPI(p, brw_imm_d(jmpi*(nr*4+1)), BRW_PREDICATE_NONE);

   copy_flatshaded_attributes(c, c->vert[0], c->vert[1]);
   copy_flatshaded_attributes(c, c->vert[2], c->vert[1]);
   brw_JMPI(p, brw_imm_d(jmpi*nr*2), BRW_PREDICATE_NONE);

   copy_flatshaded_attributes(c, c->vert[0], c->vert[2]);
   copy_flatshaded_attributes(c, c->vert[1], c->vert[2]);
}
开发者ID:TechnoMancer，项目名称:mesa，代码行数:35，代码来源:brw_sf_emit.c


示例10: compute_tri_direction

/* This is performed against the original triangles, so no indirection
 * required:
BZZZT!
 */
static void compute_tri_direction( struct brw_clip_compile *c )
{
   struct brw_compile *p = &c->func;
   struct brw_reg e = c->reg.tmp0;
   struct brw_reg f = c->reg.tmp1;
   GLuint hpos_offset = brw_vert_result_to_offset(&c->vue_map,
                                                  VARYING_SLOT_POS);
   struct brw_reg v0 = byte_offset(c->reg.vertex[0], hpos_offset);
   struct brw_reg v1 = byte_offset(c->reg.vertex[1], hpos_offset);
   struct brw_reg v2 = byte_offset(c->reg.vertex[2], hpos_offset);


   struct brw_reg v0n = get_tmp(c);
   struct brw_reg v1n = get_tmp(c);
   struct brw_reg v2n = get_tmp(c);

   /* Convert to NDC.
    * NOTE: We can't modify the original vertex coordinates,
    * as it may impact further operations.
    * So, we have to keep normalized coordinates in temp registers.
    *
    * TBD-KC
    * Try to optimize unnecessary MOV's.
    */
   brw_MOV(p, v0n, v0);
   brw_MOV(p, v1n, v1);
   brw_MOV(p, v2n, v2);

   brw_clip_project_position(c, v0n);
   brw_clip_project_position(c, v1n);
   brw_clip_project_position(c, v2n);

   /* Calculate the vectors of two edges of the triangle:
    */
   brw_ADD(p, e, v0n, negate(v2n)); 
   brw_ADD(p, f, v1n, negate(v2n)); 

   /* Take their crossproduct:
    */
   brw_set_access_mode(p, BRW_ALIGN_16);
   brw_MUL(p, vec4(brw_null_reg()), brw_swizzle(e, 1,2,0,3),  brw_swizzle(f,2,0,1,3));
   brw_MAC(p, vec4(e),  negate(brw_swizzle(e, 2,0,1,3)), brw_swizzle(f,1,2,0,3));
   brw_set_access_mode(p, BRW_ALIGN_1);

   brw_MUL(p, c->reg.dir, c->reg.dir, vec4(e));
}
开发者ID:soreau，项目名称:mesa，代码行数:50，代码来源:brw_clip_unfilled.c


示例11: brw_emit_point_setup

/* Points setup - several simplifications as all attributes are
 * constant across the face of the point (point sprites excluded!)
 */
void brw_emit_point_setup(struct brw_sf_compile *c, bool allocate)
{
   struct brw_compile *p = &c->func;
   GLuint i;

   c->flag_value = 0xff;
   c->nr_verts = 1;

   if (allocate)
      alloc_regs(c);

   copy_z_inv_w(c);

   brw_MOV(p, c->m1Cx, brw_imm_ud(0)); /* zero - move out of loop */
   brw_MOV(p, c->m2Cy, brw_imm_ud(0)); /* zero - move out of loop */

   for (i = 0; i < c->nr_setup_regs; i++)
   {
      struct brw_reg a0 = offset(c->vert[0], i);
      GLushort pc, pc_persp, pc_linear;
      bool last = calculate_masks(c, i, &pc, &pc_persp, &pc_linear);

      if (pc_persp)
      {				
	 /* This seems odd as the values are all constant, but the
	  * fragment shader will be expecting it:
	  */
	 set_predicate_control_flag_value(p, c, pc_persp);
	 brw_MUL(p, a0, a0, c->inv_w[0]);
      }


      /* The delta values are always zero, just send the starting
       * coordinate.  Again, this is to fit in with the interpolation
       * code in the fragment shader.
       */
      {
	 set_predicate_control_flag_value(p, c, pc);

	 brw_MOV(p, c->m3C0, a0); /* constant value */

	 /* Copy m0..m3 to URB.
	  */
	 brw_urb_WRITE(p,
		       brw_null_reg(),
		       0,
		       brw_vec8_grf(0, 0),
                       last ? BRW_URB_WRITE_EOT_COMPLETE
                       : BRW_URB_WRITE_NO_FLAGS,
		       4, 	/* msg len */
		       0,	/* response len */
		       i*4,	/* urb destination offset */
		       BRW_URB_SWIZZLE_TRANSPOSE);
      }
   }

   brw_set_default_predicate_control(p, BRW_PREDICATE_NONE);
}
开发者ID:TechnoMancer，项目名称:mesa，代码行数:61，代码来源:brw_sf_emit.c


示例12: MAX2

/*
  GLfloat iz	= 1.0 / dir.z;
  GLfloat ac	= dir.x * iz;
  GLfloat bc	= dir.y * iz;
  offset = ctx->Polygon.OffsetUnits * DEPTH_SCALE;
  offset += MAX2( abs(ac), abs(bc) ) * ctx->Polygon.OffsetFactor;
  offset *= MRD;
*/
static void compute_offset( struct brw_clip_compile *c )
{
   struct brw_compile *p = &c->func;
   struct brw_reg off = c->reg.offset;
   struct brw_reg dir = c->reg.dir;
   
   brw_math_invert(p, get_element(off, 2), get_element(dir, 2));
   brw_MUL(p, vec2(off), dir, get_element(off, 2));

   brw_CMP(p, 
	   vec1(brw_null_reg()), 
	   BRW_CONDITIONAL_GE,
	   brw_abs(get_element(off, 0)), 
	   brw_abs(get_element(off, 1)));

   brw_SEL(p, vec1(off), brw_abs(get_element(off, 0)), brw_abs(get_element(off, 1)));
   brw_set_predicate_control(p, BRW_PREDICATE_NONE);

   brw_MUL(p, vec1(off), off, brw_imm_f(c->key.offset_factor));
   brw_ADD(p, vec1(off), off, brw_imm_f(c->key.offset_units));
}
开发者ID:UIKit0，项目名称:mesa-1，代码行数:29，代码来源:brw_clip_unfilled.c


示例13: brw_clip_project_position

/* Project 'pos' to screen space (or back again), overwrite with results:
 */
static void brw_clip_project_position(struct brw_clip_compile *c, struct brw_reg pos )
{
   struct brw_compile *p = &c->func;

   /* calc rhw 
    */
   brw_math_invert(p, get_element(pos, W), get_element(pos, W));

   /* value.xyz *= value.rhw
    */
   brw_set_access_mode(p, BRW_ALIGN_16);
   brw_MUL(p, brw_writemask(pos, WRITEMASK_XYZ), pos, brw_swizzle1(pos, W));
   brw_set_access_mode(p, BRW_ALIGN_1);
}
开发者ID:Starlink，项目名称:mesa，代码行数:16，代码来源:brw_clip_util.c


示例14: compute_tri_direction

/* This is performed against the original triangles, so no indirection
 * required:
BZZZT!
 */
static void compute_tri_direction( struct brw_clip_compile *c )
{
   struct brw_compile *p = &c->func;
   struct brw_reg e = c->reg.tmp0;
   struct brw_reg f = c->reg.tmp1;
   struct brw_reg v0 = byte_offset(c->reg.vertex[0], c->offset[VERT_RESULT_HPOS]); 
   struct brw_reg v1 = byte_offset(c->reg.vertex[1], c->offset[VERT_RESULT_HPOS]); 
   struct brw_reg v2 = byte_offset(c->reg.vertex[2], c->offset[VERT_RESULT_HPOS]); 


   /* Calculate the vectors of two edges of the triangle:
    */
   brw_ADD(p, e, v0, negate(v2)); 
   brw_ADD(p, f, v1, negate(v2)); 

   /* Take their crossproduct:
    */
   brw_set_access_mode(p, BRW_ALIGN_16);
   brw_MUL(p, vec4(brw_null_reg()), brw_swizzle(e, 1,2,0,3),  brw_swizzle(f,2,0,1,3));
   brw_MAC(p, vec4(e),  negate(brw_swizzle(e, 2,0,1,3)), brw_swizzle(f,1,2,0,3));
   brw_set_access_mode(p, BRW_ALIGN_1);

   brw_MUL(p, c->reg.dir, c->reg.dir, vec4(e));
}
开发者ID:aljen，项目名称:haiku-opengl，代码行数:28，代码来源:brw_clip_unfilled.c


示例15: emit_dp3

static void emit_dp3( struct brw_compile *p, 
		      const struct brw_reg *dst,
		      GLuint mask,
		      const struct brw_reg *arg0,
		      const struct brw_reg *arg1 )
{
   if (!(mask & WRITEMASK_XYZW))
      return; /* Do not emit dead code*/

   assert((mask & WRITEMASK_XYZW) == WRITEMASK_X);

   brw_MUL(p, brw_null_reg(), arg0[0], arg1[0]);
   brw_MAC(p, brw_null_reg(), arg0[1], arg1[1]);

   brw_set_saturate(p, (mask & SATURATE) ? 1 : 0);
   brw_MAC(p, dst[0], arg0[2], arg1[2]);
   brw_set_saturate(p, 0);
}
开发者ID:Multi2Sim，项目名称:m2s-bench-parsec-3.0-src，代码行数:18，代码来源:brw_wm_emit.c


示例16: emit_mul

static void emit_mul(struct brw_wm_compile *c,
		struct prog_instruction *inst)
{
    struct brw_compile *p = &c->func;
    struct brw_reg src0, src1, dst;
    GLuint mask = inst->DstReg.WriteMask;
    int i;
    brw_set_saturate(p, (inst->SaturateMode != SATURATE_OFF) ? 1 : 0);
    for (i = 0 ; i < 4; i++) {
	if (mask & (1<<i)) {
	    dst = get_dst_reg(c, inst, i, 1);
	    src0 = get_src_reg(c, &inst->SrcReg[0], i, 1);
	    src1 = get_src_reg(c, &inst->SrcReg[1], i, 1);
	    brw_MUL(p, dst, src0, src1);
	}
    }
    brw_set_saturate(p, 0);
}
开发者ID:Multi2Sim，项目名称:m2s-bench-parsec-3.0-src，代码行数:18，代码来源:brw_wm_glsl.c


示例17: emit_dph

static void emit_dph(struct brw_wm_compile *c,
		struct prog_instruction *inst)
{
    struct brw_reg src0[4], src1[4], dst;
    int i;
    struct brw_compile *p = &c->func;
    for (i = 0; i < 4; i++) {
	src0[i] = get_src_reg(c, &inst->SrcReg[0], i, 1);
	src1[i] = get_src_reg(c, &inst->SrcReg[1], i, 1);
    }
    dst = get_dst_reg(c, inst, get_scalar_dst_index(inst), 1);
    brw_MUL(p, brw_null_reg(), src0[0], src1[0]);
    brw_MAC(p, brw_null_reg(), src0[1], src1[1]);
    brw_MAC(p, dst, src0[2], src1[2]);
    brw_set_saturate(p, (inst->SaturateMode != SATURATE_OFF) ? 1 : 0);
    brw_ADD(p, dst, src0[3], src1[3]);
    brw_set_saturate(p, 0);
}
开发者ID:Multi2Sim，项目名称:m2s-bench-parsec-3.0-src，代码行数:18，代码来源:brw_wm_glsl.c


示例18: emit_dp2

void emit_dp2(struct brw_compile *p,
	      const struct brw_reg *dst,
	      GLuint mask,
	      const struct brw_reg *arg0,
	      const struct brw_reg *arg1)
{
   int dst_chan = _mesa_ffs(mask & WRITEMASK_XYZW) - 1;

   if (!(mask & WRITEMASK_XYZW))
      return; /* Do not emit dead code */

   assert(is_power_of_two(mask & WRITEMASK_XYZW));

   brw_MUL(p, brw_null_reg(), arg0[0], arg1[0]);

   brw_set_saturate(p, (mask & SATURATE) ? 1 : 0);
   brw_MAC(p, dst[dst_chan], arg0[1], arg1[1]);
   brw_set_saturate(p, 0);
}
开发者ID:mlankhorst，项目名称:Mesa-3D，代码行数:19，代码来源:brw_wm_emit.c


示例19: emit_mad

void emit_mad(struct brw_compile *p,
	      const struct brw_reg *dst,
	      GLuint mask,
	      const struct brw_reg *arg0,
	      const struct brw_reg *arg1,
	      const struct brw_reg *arg2)
{
   GLuint i;

   for (i = 0; i < 4; i++) {
      if (mask & (1<<i)) {
	 brw_MUL(p, dst[i], arg0[i], arg1[i]);

	 brw_set_saturate(p, (mask & SATURATE) ? 1 : 0);
	 brw_ADD(p, dst[i], dst[i], arg2[i]);
	 brw_set_saturate(p, 0);
      }
   }
}
开发者ID:mlankhorst，项目名称:Mesa-3D，代码行数:19，代码来源:brw_wm_emit.c


示例20: emit_pinterp

void emit_pinterp(struct brw_compile *p,
		  const struct brw_reg *dst,
		  GLuint mask,
		  const struct brw_reg *arg0,
		  const struct brw_reg *deltas,
		  const struct brw_reg *w)
{
   struct intel_context *intel = &p->brw->intel;
   struct brw_reg interp[4];
   GLuint nr = arg0[0].nr;
   GLuint i;

   if (intel->gen >= 6) {
      emit_linterp(p, dst, mask, arg0, interp);
      return;
   }

   interp[0] = brw_vec1_grf(nr, 0);
   interp[1] = brw_vec1_grf(nr, 4);
   interp[2] = brw_vec1_grf(nr+1, 0);
   interp[3] = brw_vec1_grf(nr+1, 4);

   for (i = 0; i < 4; i++) {
      if (mask & (1<<i)) {
	 if (can_do_pln(intel, deltas)) {
	    brw_PLN(p, dst[i], interp[i], deltas[0]);
	 } else {
	    brw_LINE(p, brw_null_reg(), interp[i], deltas[0]);
	    brw_MAC(p, dst[i], suboffset(interp[i],1), deltas[1]);
	 }
      }
   }
   for (i = 0; i < 4; i++) {
      if (mask & (1<<i)) {
	 brw_MUL(p, dst[i], dst[i], w[3]);
      }
   }
}
开发者ID:mlankhorst，项目名称:Mesa-3D，代码行数:38，代码来源:brw_wm_emit.c



注：本文中的brw_MUL函数示例由纯净天空整理自Github/MSDocs等源码及文档管理平台，相关代码片段筛选自各路编程大神贡献的开源项目，源码版权归原作者所有，传播和使用请参考对应项目的License；未经允许，请勿转载。

鲜花
握手
雷人
路过
鸡蛋
该文章已有0人参与评论

请发表评论

全部评论

专题导读
More+
上一篇：
C++ brw_context函数代码示例发布时间：2022-05-30
下一篇：
C++ brw_CMP函数代码示例发布时间：2022-05-30
热门推荐
More+
热门话题
More+
阅读排行榜

扫描微信二维码

查看手机版网站

随时了解更新最新资讯

139-2527-9053

在线客服（服务时间 9:00～18:00）

在线QQ客服
地址：深圳市南山区西丽大学城创智工业园
电邮：jeky_zhao#qq.com
移动电话：139-2527-9053

Powered by 互联科技 X3.4© 2001-2213 极客世界.|Sitemap